botnaut
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<li class="header">Building a chat bot</li>
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Getting Started
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Using quick replies
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Advanced Routing
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Resolving Actions
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Text Actions
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Integrating AI
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Redirecting with Postback
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Wingbot.ai
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<a href=".." >Advanced Routing</a>
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<h1 id="advanced-routing"><a name="advanced-routing" class="plugin-anchor" href="#advanced-routing"><i class="fa fa-link" aria-hidden="true"></i></a>Advanced Routing</h1>
<h2 id="resolving-actions"><a name="resolving-actions" class="plugin-anchor" href="#resolving-actions"><i class="fa fa-link" aria-hidden="true"></i></a>Resolving actions</h2>
<p>Text is always treated as action, so theese two routes are matched same, when the <code>/cat</code> action is issued.</p>
<pre><code class="lang-javascript"><span class="hljs-keyword">const</span> { Router } = <span class="hljs-built_in">require</span>(<span class="hljs-string">'botnaut'</span>);
<span class="hljs-keyword">const</span> bot = <span class="hljs-keyword">new</span> Router();
bot.use(req => req.action() === <span class="hljs-string">'/cat'</span>, (req, res) => {
res.text(<span class="hljs-string">'Matched!'</span>);
});
bot.use(<span class="hljs-string">'/cat'</span>, (req, res) => { res.text(<span class="hljs-string">'Matched!'</span>); });
<span class="hljs-built_in">module</span>.exports = bot;
</code></pre>
<blockquote>
<p>Actual path resolver also takes into account the fact, that routers can be nested.</p>
</blockquote>
<h2 id="simple-text-actions"><a name="simple-text-actions" class="plugin-anchor" href="#simple-text-actions"><i class="fa fa-link" aria-hidden="true"></i></a>Simple text actions</h2>
<p>It's possible to use reqular expression to match the specific text input. Without any AI tool.</p>
<pre><code class="lang-javascript"><span class="hljs-keyword">const</span> { Router } = <span class="hljs-built_in">require</span>(<span class="hljs-string">'botnaut'</span>);
<span class="hljs-keyword">const</span> bot = <span class="hljs-keyword">new</span> Router();
bot.use(<span class="hljs-regexp">/h[ea]llo|hallo|ciao/</span>, (req, res) => {
res.text(<span class="hljs-string">'Matched:'</span>)
.text(req.text(<span class="hljs-literal">true</span>)); <span class="hljs-comment">// echoes normalized text</span>
});
bot.use((req, res) => { res.text(<span class="hljs-string">'Not matched'</span>); });
<span class="hljs-built_in">module</span>.exports = bot;
</code></pre>
<p>And the code works like this. It matches lot of words, because the regular expression
does not match whole words:</p>
<pre><code>*-----------------------------------*
| Hello |
| Matched: |
| hello |
| |
| Hello robot! |
| Matched: |
| hello-robot |
| |
| Hi! Čiaó! |
| Matched: |
| hi-ciao |
| |
| HiHello |
| hihello |
*-----------------------------------*
</code></pre><h2 id="integrating-with-ai-prediction"><a name="integrating-with-ai-prediction" class="plugin-anchor" href="#integrating-with-ai-prediction"><i class="fa fa-link" aria-hidden="true"></i></a>Integrating with AI prediction</h2>
<p>It's ofcourse possible to make integration with 3rd party service. Function should return a boolean, where <code>true === CONTINUE</code> and <code>false === BREAK</code>.</p>
<pre><code class="lang-javascript"><span class="hljs-keyword">const</span> { Router } = <span class="hljs-built_in">require</span>(<span class="hljs-string">'botnaut'</span>);
<span class="hljs-keyword">const</span> keyworder = <span class="hljs-built_in">require</span>(<span class="hljs-string">'keyworder'</span>);
<span class="hljs-keyword">const</span> bot = <span class="hljs-keyword">new</span> Router();
bot.use((req) => {
<span class="hljs-keyword">if</span> (req.action()) {
<span class="hljs-comment">// skip events with specific action (postback, quick reply, ref...)</span>
<span class="hljs-keyword">return</span> <span class="hljs-literal">false</span>;
}
<span class="hljs-keyword">return</span> keyworder.resolve(req.text())
.then(intents => intents
.some(intent => intent.tag === <span class="hljs-string">'greeting'</span> && intent.score > <span class="hljs-number">0.95</span>)
);
}, (req, res) => {
res.text(<span class="hljs-string">'Matched:'</span>);
});
<span class="hljs-built_in">module</span>.exports = bot;
</code></pre>
<h2 id="redirecting-flow-with-post-back"><a name="redirecting-flow-with-post-back" class="plugin-anchor" href="#redirecting-flow-with-post-back"><i class="fa fa-link" aria-hidden="true"></i></a>Redirecting flow with Post Back</h2>
<p>Sometimes there is need to redirect the conversation flow. For theese purposes,
there is a <code>postBack(action: string, data: object?)</code> function.</p>
<pre><code class="lang-javascript"><span class="hljs-keyword">const</span> { Router } = <span class="hljs-built_in">require</span>(<span class="hljs-string">'botnaut'</span>);
<span class="hljs-keyword">const</span> bot = <span class="hljs-keyword">new</span> Router();
bot.use(<span class="hljs-string">'world'</span>, (req, res) => {
res.text(<span class="hljs-string">'world'</span>);
});
bot.use((req, res, postBack) => {
res.text(<span class="hljs-string">'Hello'</span>);
postBack(<span class="hljs-string">'world'</span>);
});
<span class="hljs-built_in">module</span>.exports = bot;
</code></pre>
<p>The result of postBack looks like this</p>
<pre><code>*-----------------------------------*
| Let's start |
| hello |
| world |
*-----------------------------------*
</code></pre><h2 id="or-conditions---addressable-text-microiteractions"><a name="or-conditions---addressable-text-microiteractions" class="plugin-anchor" href="#or-conditions---addressable-text-microiteractions"><i class="fa fa-link" aria-hidden="true"></i></a>Or conditions - addressable text microiteractions</h2>
<p>Some microinteractions can be triggered by text and also by action, so why to separate them.</p>
<p><strong>!addressable microiteractions has global scope</strong></p>
<pre><code class="lang-javascript"><span class="hljs-keyword">const</span> bot = <span class="hljs-keyword">new</span> Router();
bot.use([<span class="hljs-string">'world'</span>, <span class="hljs-regexp">/^world-text$/</span>], (req, res) => {
res.text(<span class="hljs-string">'world'</span>);
});
bot.use((req, res, postBack) => {
res.text(<span class="hljs-string">'Hello'</span>, {
world: <span class="hljs-string">'quick reply'</span>
}).expected(<span class="hljs-string">'./'</span>);
});
<span class="hljs-built_in">module</span>.exports = bot;
</code></pre>
<p>The result looks like this:</p>
<pre><code>*-----------------------------------*
| Let's start |
| Hello |
| world |
| world |
*-----------------------------------*
</code></pre><h2 id="expected-cases"><a name="expected-cases" class="plugin-anchor" href="#expected-cases"><i class="fa fa-link" aria-hidden="true"></i></a>Expected cases</h2>
<p>For clean code it's good to handle text for quick replies separately.</p>
<pre><code class="lang-javascript"><span class="hljs-keyword">const</span> bot = <span class="hljs-keyword">new</span> Router();
bot.use((req, res, postBack) => {
res.text(<span class="hljs-string">'Hello'</span>, {
world: <span class="hljs-string">'quick reply'</span>
}).expected(<span class="hljs-string">'expectedRoute'</span>);
});
bot.use(<span class="hljs-string">'expectedRoute'</span>, <span class="hljs-regexp">/^foo$/</span>, (req, res) => res.text(<span class="hljs-string">'foooooo'</span>));
bot.use(<span class="hljs-string">'expectedRoute'</span>, <span class="hljs-regexp">/^bar$/</span>, (req, res) => res.text(<span class="hljs-string">'barrrrr'</span>));
<span class="hljs-built_in">module</span>.exports = bot;
</code></pre>
<p>The result looks like this:</p>
<pre><code>*-----------------------------------*
| Let's start |
| Hello |
| bar |
| bar |
*-----------------------------------*
</code></pre>
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